# public health > science and art of preventing disease, prolonging life and promoting health through organized efforts and informed choices of society, organizations, public and private, communities and individuals **Wikidata**: [Q189603](https://www.wikidata.org/wiki/Q189603) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Public_health) **Source**: https://4ort.xyz/entity/public-health ## Summary Public health is the science and art of preventing disease, prolonging life, and promoting health through organized efforts and informed choices of society, organizations, public and private entities, communities, and individuals. It functions as an applied science within health sciences and a discipline within social science, focusing on population-level outcomes rather than individual clinical care. The field encompasses diverse branches such as environmental health, global health, and preventive medicine, utilizing specific metrics like disability-adjusted life years to measure impact. ## Key Facts * **Definition:** The science and art of preventing disease, prolonging life, and promoting health through organized efforts and informed choices of society, organizations, public and private, communities, and individuals. * **Parent Disciplines:** Classified under health sciences (applied sciences in healthcare) and social science (academic disciplines concerned with society and relationships). * **Core Branches:** Includes dental public health (non-clinical dentistry specialty), environmental health (impacts of environment on human health), global health (trans-national research), and preventive medicine (anticipatory actions categorized as primal, primary, secondary, tertiary, and quaternary). * **Related Concepts:** Encompasses population health (study of health outcomes for groups), sociology of health and illness, medical sociology, social determinants of health, and effects of climate change on human health. * **Key Metrics:** Utilizes disability-adjusted life year (combining severity and duration of disease/loss of life) and quality-adjusted life year (combining quality and duration of life) as primary health indicators. * **Major Organizations:** * **World Health Organization (WHO):** UN agency founded on April 7, 1948, headquartered in Geneva, with 7,000 employees. * **American Public Health Association:** Professional organization founded in 1872, based in Washington, D.C. * **Pan American Health Organization:** International agency founded on December 2, 1902, headquartered in Washington, D.C. * **Agency for Toxic Substances and Disease Registry:** US federal division founded on December 31, 1980. * **European Directorate for the Quality of Medicines & HealthCare:** Council of Europe agency founded in 1996, headquartered in Strasbourg, with 300 employees. * **UK Health Security Agency:** UK health agency established on August 18, 2020 (formerly National Institute for Health Protection). * **Africa Centres for Disease Control and Prevention:** Pan-African organization founded January 31, 2016 (operational January 31, 2017), headquartered in Addis Ababa. * **Agència de Salut Pública de Catalunya:** Government organization in Barcelona, Spain, founded in 2009, with 1,500 employees (as of 2020). * **Novel Coronavirus Expert Meeting:** Organization established by Japan's Novel Coronavirus Response Headquarters on February 14, 2020. * **Notable Individuals:** * **Hans Rosling:** Swedish medical doctor, academic, statistician, and public speaker. * **Lothar H. Wieler:** German veterinarian, microbiologist, and current president of the Robert Koch Institute. * **Devi Sridhar:** Global public health researcher with citizenship in the UK and US. * **Ancel Keys:** American nutritionist (1904–2004). * **George C. Whipple:** American civil engineer (1866–1924). * **Judith Shuval:** Israeli sociologist (1925–2025). * **Salim Abdool Karim:** South African researcher. * **Rachel R. Hardeman:** American public health academic. * **Richard A. Cash:** American global health researcher (1941–2024). * **Esther Pohl Lovejoy:** American physician and international relief worker (1869–1967). * **Michael T. Osterholm:** American epidemiologist. * **Sally Davies:** British medical doctor and academic administrator. * **Georges C. Benjamin:** American public health official. * **Marie Paule Kieny:** French virologist and science writer. * **Didier Fassin:** French anthropologist. * **Daria Khaltourina:** Sociologist and anthropologist. * **Tererai Trent:** Zimbabwean emigrant and academic. * **Judith Mackay:** Hong Kong doctor. * **Padmini Murthy:** Indian American physician. * **Héctor Abad Gómez:** Colombian medical doctor, professor, and human rights leader. * **Volf Bronner:** Russian Empire and Soviet physician. * **Miriam Were:** Kenyan public health advocate, academic, and novelist. * **Carl Ernst Bock:** German anatomist (1809–1874). * **Nicolas Rasmussen:** History researcher. * **Chris Beyrer:** American physician and academic. * **Cissy Kityo:** Ugandan physician and medical researcher. * **Alberto Alemanno:** Legal scholar and public interest lawyer. * **Grace Schneiders-Howard:** Surinamese social worker and politician. * **Jean-Marcel Jeanneney:** French politician (1910–2010). * **Wan Yanhai:** Chinese activist. * **Zohurul Hoque:** Translator of the Quran (1926–2017). * **Strategies and Concepts:** Includes "flatten the curve" (public health strategy), contact tracing, health impact assessment, and disease burden measurement. * **Historical Context:** Includes sanitation in ancient Rome, which was well advanced compared to other ancient cities. * **Professional Pathways:** Includes the public health professional degree and roles such as public health professional. * **Regional Services:** Includes Vina del Mar - Quillota health service and Maule Health Service in Chile. * **Other Entities:** National Public Assistance (Uruguay, founded Nov 7, 1910), New York State Interdepartmental Health Resources Board (US, founded 1955), Putrajaya Corporation (Malaysia, founded Jan 1, 1995), Nuclear Emergency Support Team (US, founded 1974). ## FAQs **What are the primary academic classifications of public health?** Public health is categorized as both an applied science within health sciences and an academic discipline within social science. It intersects with sociology through branches like the sociology of health and illness and medical sociology, while also functioning as a distinct field of study and profession. **Which major international and national organizations govern public health efforts?** Global efforts are led by the World Health Organization (founded 1948) and the Pan American Health Organization (founded 1902). National and regional bodies include the US Agency for Toxic Substances and Disease Registry (1980), the UK Health Security Agency (2020), the Africa Centres for Disease Control and Prevention (2016), and the European Directorate for the Quality of Medicines & HealthCare (1996). **How is the success or impact of public health interventions measured?** Impact is quantified using specific health indicators such as the disability-adjusted life year, which combines disease severity and duration, and the quality-adjusted life year, which factors in life quality and duration. Other measures include life expectancy, disease burden (financial cost, mortality, morbidity), and health impact assessments. **What are the specific branches and sub-disciplines within public health?** The field includes specialized areas such as environmental health, which focuses on environmental impacts; dental public health, a non-clinical dentistry specialty; and global health, which involves trans-national collaboration. It also encompasses preventive medicine, which utilizes primal, primary, secondary, tertiary, and quaternary prevention strategies. **Who are some of the key historical and contemporary figures in public health?** Significant figures include Hans Rosling, a Swedish statistician and doctor; Lothar H. Wieler, president of the Robert Koch Institute; and Ancel Keys, a prominent American nutritionist. The field also honors historical leaders like George C. Whipple, an American civil engineer, and contemporary researchers like Devi Sridhar and Salim Abdool Karim. ## Why It Matters Public health serves as the foundational framework for societal well-being, shifting the focus from individual treatment to the prevention of disease and the prolongation of life for entire populations. By addressing social determinants of health, environmental factors, and climate change effects, it solves complex systemic issues that clinical medicine alone cannot resolve. Its organized efforts enable societies to manage health crises, reduce disease burden, and improve life expectancy through evidence-based strategies like contact tracing and health impact assessments. Without these coordinated efforts by public and private organizations, communities would lack the infrastructure to prevent pandemics, manage sanitation, or ensure equitable health outcomes across different demographics. ## Notable For * **Dual Classification:** Unique in being simultaneously recognized as a branch of health sciences and a sub-discipline of social science. * **Preventive Focus:** Distinct from clinical medicine by prioritizing anticipatory actions categorized into primal, primary, secondary, tertiary, and quaternary prevention. * **Global Collaboration:** The only field defined by collaborative trans-national research and action specifically for promoting health for all populations. * **Metric Innovation:** Pioneered the use of complex metrics like the disability-adjusted life year to measure the total burden of disease in a population. * **Historical Depth:** Traces its roots to advanced sanitation systems in ancient Rome, demonstrating a long history of organized health efforts. * **Interdisciplinary Nature:** Integrates sociology, environmental science, epidemiology, and policy to address the "social determinants of health." * **Crisis Management:** Central to strategies like "flatten the curve" and contact tracing during infectious disease outbreaks. * **Professional Standardization:** Offers dedicated professional degrees and distinct career paths for public health professionals. ## Body ### Definition and Academic Scope Public health is defined as the science and art of preventing disease, prolonging life, and promoting health through organized efforts and informed choices of society, organizations, public and private, communities, and individuals. It operates as an applied science within the broader domain of health sciences and functions as a critical academic discipline within social science. The field is deeply interconnected with sociology, specifically through the sociology of health and illness and medical sociology, which analyze medical organizations and institutions. It also overlaps with population health, which studies health outcomes for groups of individuals, and preventive medicine, which employs anticipatory actions. ### Core Branches and Specializations The discipline is divided into several specialized branches. Environmental health focuses specifically on how environmental impacts affect human health. Dental public health serves as the non-clinical specialty of dentistry dedicated to the prevention of oral disease and promotion of oral health. Global health represents collaborative trans-national research and action aimed at promoting health for all. Preventive medicine is a key component, utilizing measures categorized as primal, primary, secondary, tertiary, and quaternary prevention. Other related fields include the effects of climate change on human health and the study of social determinants of health, which examine economic and social conditions influencing health status differences. ### Measurement and Metrics To evaluate the effectiveness of public health interventions, the field relies on specific statistical measures. The disability-adjusted life year (DALY) is a primary indicator that combines the severity and duration of disease and loss of life, measurable as healthy years lost or as a rate divided by person-time lived. The quality-adjusted life year (QALY) combines quality and duration of life into a cumulative metric. Life expectancy serves as a statistical measure of how long a person or organism may live based on various life factors. Disease burden measures the impact of a health problem through financial cost, mortality, morbidity, or other indicators. Health impact assessments are methods used to assess the impacts of actions or risk factors on health to produce evidence-based recommendations. ### Major Organizations and Agencies A vast network of organizations operates within the public health sector. The World Health Organization (WHO), a United Nations agency, was founded on April 7, 1948, with its headquarters in Geneva, Switzerland, and employs approximately 7,000 people. The American Public Health Association, based in Washington, D.C., was established in 1872. The Pan American Health Organization, an international public health agency, was founded on December 2, 1902, and is also headquartered in Washington, D.C. In the United States, the Agency for Toxic Substances and Disease Registry was created on December 31, 1980, to protect people from harmful chemical exposures. The UK Health Security Agency was established on August 18, 2020, following the National Institute for Health Protection. In Europe, the European Directorate for the Quality of Medicines & HealthCare, an agency of the Council of Europe, was founded in 1996 in Strasbourg with 300 employees. The Africa Centres for Disease Control and Prevention, a pan-African organization, was established on January 31, 2016, with operations beginning in 2017, and is headquartered in Addis Ababa. Regional bodies include the Agència de Salut Pública de Catalunya in Barcelona, Spain, founded in 2009 with 1,500 employees as of 2020, and the Novel Coronavirus Expert Meeting in Japan, established on February 14, 2020. ### Key Figures and Contributors The field is shaped by numerous notable individuals across history and geography. Hans Rosling, a Swedish medical doctor, academic, statistician, and public speaker, is a prominent figure. Lothar H. Wieler, a German veterinarian and microbiologist, currently serves as the president of the Robert Koch Institute. Devi Sridhar is a global public health researcher with citizenship in both the UK and the US. Ancel Keys, an American nutritionist active from 1904 to 2004, made significant contributions. George C. Whipple, an American civil engineer (1866–1924), is another key historical figure. Judith Shuval, an Israeli sociologist (1925–2025), contributed to the field's sociological aspects. Salim Abdool Karim, a South African researcher, and Rachel R. Hardeman, an American public health academic, are contemporary leaders. Richard A. Cash, an American global health researcher (1941–2024), and Esther Pohl Lovejoy, an American physician and international relief worker (1869–1967), are also recognized. Other significant contributors include Michael T. Osterholm (American epidemiologist), Sally Davies (British medical doctor), Georges C. Benjamin (American public health official), Marie Paule Kieny (French virologist), Didier Fassin (French anthropologist), Daria Khaltourina (sociologist and anthropologist), Tererai Trent (Zimbabwean emigrant), Judith Mackay (Hong Kong doctor), Padmini Murthy (Indian American physician), Héctor Abad Gómez (Colombian medical doctor and human rights leader), Volf Bronner (Russian Empire and Soviet physician), Miriam Were (Kenyan public health advocate), Carl Ernst Bock (German anatomist, 1809–1874), Nicolas Rasmussen (history researcher), Chris Beyrer (American physician), Cissy Kityo (Ugandan physician), Alberto Alemanno (legal scholar), Grace Schneiders-Howard (Surinamese social worker), Jean-Marcel Jeanneney (French politician), Wan Yanhai (Chinese activist), and Zohurul Hoque (translator of the Quran). ### Strategies, Concepts, and History Public health employs specific strategies such as "flatten the curve" to manage infectious disease spread and contact tracing to identify individuals in close contact with infected persons. The field addresses health crises, which are difficult situations affecting humans in one or more geographic areas. Historical context includes sanitation in ancient Rome, which was well advanced compared to other ancient cities. The discipline also deals with controversies such as those surrounding autism, including causes and diagnoses. Professional pathways include the public health professional degree. Other related entities include the National Public Assistance in Uruguay (founded November 7, 1910), the New York State Interdepartmental Health Resources Board (US, founded 1955), the Putrajaya Corporation in Malaysia (founded January 1, 1995), and the Nuclear Emergency Support Team in the US (founded 1974). Regional health services include the Vina del Mar - Quillota health service and the Maule Health Service in Chile. ## References 1. Directory of Open Access Journals 2. Freebase Data Dumps. 2013 3. Nuovo soggettario 4. Library of Congress Authorities 5. BBC Things 6. 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